Improvement in ice-machines



D. BUY LE.

. Ice-Machine. No.\63,142, Paentedwlaynnm @ya lgz.

THE GRAPHIC COJHOTO LITM.39 B: 41 PARK PLACE, NY.

ATENT OFFIon DAI-ID BOYLE, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN ICE-MACHINES.

Specification forming part of Letters Patent No. 163,142, dated May 11, 1875; application filed November 10,1874.

T0 all whom it may concern:

Be it known that I, DAVID BOYLE, of Washington, District of Columbia, have in vented certain new and useful Improvements in Ice and Retrigerating Machines, of which the following is a specication, reference being had to the accompanying drawings.

The invention relates to an improved icemaehine; and consists in producing a current of the freezing agent around an evaporatorcoil placed in a hollow compartment, for the purpose of chilling` the freezing agent evenly and speedily; also, in agitating the water in the tank between the freezing-surfaces, so as to assist in the congelation and expel the coniined air, thereby producing clear ice.

Figure l is a side elevation of a device embodying the elements of the invention, one side of the tank and one'of the plates F removed. Fig. 2 is an end View of same, one side of the tank A and one end of the frame H removed.

A, in the accompanying drawings, is a freezing-tank of any suitable construction. D are coils placed vertically in the compartments E, which are constructed in any proper manner, having the plates F, of conducting material, secured to the frame H, of non-conducting material, and recessed, as shown at o. The agitator consists of the strips I, which extend transversely across the top of the tank A, and are provided at certain intervals with the rocking plates K, pivoted to the strips about their centers. Their upper ends, extending above the strip, are provided with the aperture a. At each lateral end of the rocking plates the apertures b are placed, in which are loosely secured the upper ends ofthe pendants d, which are placed opposite each other, and at opposite sides of the tank, certain pairs being in the compartments E, on each side of the coil, the other .pairs being in the tank between the freezing-surfaces, and also between the said surfaces and the sides of the tanlf. The pendants d are connected in pairs by the hollow conical or angular strips e, which extend from one pendant to that opposite on the other side of the tank or compartment. Upon the pendants in the compartments E are placed, on each side of the coil, the strips c,

with their apexes upward, and on those pend ants on the other side of the coil the strips have their apexes downward, the object o1 this arrangement being to produce a curremI of the freezing agent around the coil D, thin bringing the iuid in contact therewith, an( also in contact with the interior of the freez ing-surfaces. Upon the pendants d, betweer the freezing-plates, and between the plates and the side of the tank, the strips c are placed alternately, with their apexes upwa" and downward, the object of this construe tion being to agitate the water, so as t( produce a uniform temperature, and also t( assist the congelation, as water at rest may be several degrees below the freezing-poin and yet not freeze. The agitation also assist: in expelling confined air.

Rods M connect the upper ends of the rock ing plates K, and extend beyond the side o. the tank, where they are provided with a cross rod, N, which being moved, all the pendant: D and attachments are alternately elevatet and lowered, creating a current in the com partments, and agitatingthe water in the tank rIhe operation is conducted by filling th( tank A to about the level ofthe upper edges ofthe plates F, lling the compartments I with the refrigerant, then admitting the chill ing agent to the coils D. The agitating an( current-creatin g devices are now operate( with the effect aforesaid, until iee of the de sired thickness is formed in sheets upon thi plates F.

Care should be taken that the ice does no form entirely across the water-spaces.

The usual product is ice free from bubble o. any other imperfection.

I do not lay any claim herein to the compari ment E, provided with the coil D and suitabli lilling and emptying vents, as I have madi that the subject-matter lof another and sepa rate application for patent 5 but What I do claim as my invention, and de sire to secure by Letters Patent, is-

1. A device common to the compartments and spaces between them, whereby the uncon gealable fluid in the compartments and the water in the spaces between the compartmenti are operated upon, producing simultaneously current around L.. l' vator-coil in the In testimony that I claim the foregoing imampartment, and agitatin 'i3-Water between provements in ice and refrigerating machines,

1e freezing-plates, substantia.`1y as specified. as above described, I have hereunto set my 2. The pyramidal strips e, for agitating the hand and seal this 3d day of November, 1874.

'ater and creating a current in the unconealable uid, as set forth. DAVID BOYLE. [L S.]

3. An evaporator-tank surrounded by a nononductor, in combination with. the strips e, Witnesses:

raw-rods d, and means of operating the rods, WILLIAM B. BUSHNELL,

ubstautiully as stated. THos. L. RANKXN. 

